The 1930’s American Dust Bowl was an environmental catastrophe, associated with massive erosion across parts of the Great Plains. Analyzing new data collected to identify low-, medium-, and high-erosion counties, the Dust Bowl is estimated to have substantially reduced agricultural land values and revenues. During the Great Depression and through at least the 1950’s, there was limited reallocat...

Understanding the synchronization of oscillations across space is fundamentally important to many scientific disciplines. In ecology, long-range synchronization of oscillations in spatial populations may elevate extinction risk and signal an impending catastrophe. The prevailing assumption is that synchronization on distances longer than the dispersal scale can only be due to environmental corr...

Forest-based natural catastrophes are regular features of timber production in the United States, especially from hurricanes, fires, and insect and disease outbreaks. These catastrophes affect timber prices and result in economic transfers. We develop a model of timber market dynamics after such a catastrophe that shows how timber salvage affects the welfare of different market groups and quant...

According to IPCC report 2013, the role of man in environmental catastrophe is incontrovertible because of high greenhouse emission in now and recent century. Buildings nearly discharge one third of these pollutants and the task of architects to prevent this hazardous procedure is critical. On the other hand, one main basis of sustainability is education in order to preserve environment and the...

Polo-like kinase 1 (PLK1), which has been shown to have a critical role in mitosis, is one possible target for cancer therapeutic intervention. PLK1, at least in Xenopus, starts the mitotic cascade by phosphorylating and activating cdc25C phosphatase. Also, loss of PLK1 function has been shown to induce mitotic catastrophe in a HeLa cervical carcinoma cell line but not in normal Hs68 fibroblast...